Wiener Karosserie und Flugzeugfabrik, originally Dr W. Gutmann’s bodybuilding firm, built Lloyd recon-bomber from July 1915, fitting 165-hp (instead of 145-hp) Austro-Daimler from December, calling result W.K.F Type 43. The first fighter of original design to be produced by W.K.F., the W.K.F. 80.05 single-bay staggered triplane designed by Ing Alfred Gassner was completed in November 1917. Of wooden construction, it utilised a so-called Fischrumpf, or "Fish[-shaped] Fuselage", of hexagonal cross section with plywood skinning, and the wings, which had I-type, aerofoil-section interplane struts, had ailerons on the upper and centre planes only. The W.K.F. 80.05 was powered by a 200 hp Austro-Daimler six-cylinder inline water-cooled engine and provision was made for an armament of twin synchronised Schwarzlose machine guns. Forward view from the cockpit was extremely limited by the very shallow cabane and the radiator bracing, and only limited flight testing of the sole W.K.F. 80.05 prototype was undertaken. Also was built various Type 80 prototypes, wholly W.K.F design, and biplane fighter.